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chore: bye netbird

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oddlama 2025-02-18 15:31:52 +01:00
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2
README.md
View file

@ -55,7 +55,7 @@ I've included the major components in the lists below.
📄 Documents | Paperless | [Link](./hosts/sire/guests/paperless.nix) | Document management system. With per-user Samba share integration (consume & archive)
🗓️ CalDAV/CardDAV | Radicale | [Link](./hosts/ward/guests/radicale.nix) | Contacts, Calender and Tasks synchronization
📁 NAS | Samba | [Link](./hosts/sire/guests/samba.nix) | Network attached storage. Cross-integration with paperless
🌐 VPN | Netbird | [Link](./hosts/ward/guests/netbird.nix) | Internal network gateway and wireguard VPN server with dynamic peer configuration and SSO authentication.
🌐 VPN | Firezone | [Link](./hosts/ward/guests/firezone.nix) | Internal network gateway and wireguard VPN server with dynamic peer configuration and SSO authentication.
🏠 Home Automation | Home Assistant | [Link](./hosts/zackbiene/home-assistant.nix) | Automation with Home Assistant and many related services
📧 Mailserver | Stalwart | [Link](./hosts/envoy/stalwart-mail.nix) | Modern mail server setup with custom self-service alias management including Bitwarden integration
🧱 Minecraft | PaperMC | [Link](./hosts/sire/guests/minecraft.nix) | Minecraft game server. Autostart on connect, systemd service with background console, automatic backups

2
config/users.nix
View file

@ -35,7 +35,7 @@
maddy = uidGid 976;
minecraft = uidGid 975;
stalwart-mail = uidGid 974;
netbird-home = uidGid 973;
# 973
gamemode = uidGid 972;
plausible = uidGid 971;
actual = uidGid 970;

85
hosts/sentinel/coturn.nix
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@ -1,85 +0,0 @@
{
config,
globals,
lib,
pkgs,
...
}:
let
inherit (lib)
getExe
mkAfter
mkForce
;
hostDomain = globals.domains.me;
coturnDomain = "coturn.${hostDomain}";
in
{
age.secrets.coturn-password-netbird = {
generator.script = "alnum";
group = "turnserver";
mode = "440";
};
networking.firewall.allowedUDPPorts = [
config.services.coturn.listening-port
config.services.coturn.alt-listening-port
config.services.coturn.tls-listening-port
config.services.coturn.alt-tls-listening-port
];
networking.firewall.allowedTCPPorts = [
config.services.coturn.listening-port
config.services.coturn.alt-listening-port
config.services.coturn.tls-listening-port
config.services.coturn.alt-tls-listening-port
];
networking.firewall.allowedUDPPortRanges = [
{
from = config.services.coturn.min-port;
to = config.services.coturn.max-port;
}
];
globals.services.coturn.domain = coturnDomain;
services.coturn = {
enable = true;
realm = coturnDomain;
lt-cred-mech = true;
no-cli = true;
extraConfig = ''
fingerprint
user=netbird:@password@
no-software-attribute
'';
cert = "@cert@";
pkey = "@pkey@";
};
systemd.services.coturn =
let
certsDir = config.security.acme.certs.${hostDomain}.directory;
in
{
preStart = mkAfter ''
${getExe pkgs.replace-secret} @password@ ${config.age.secrets.coturn-password-netbird.path} /run/coturn/turnserver.cfg
${getExe pkgs.replace-secret} @cert@ <(echo "$CREDENTIALS_DIRECTORY/cert.pem") /run/coturn/turnserver.cfg
${getExe pkgs.replace-secret} @pkey@ <(echo "$CREDENTIALS_DIRECTORY/pkey.pem") /run/coturn/turnserver.cfg
'';
serviceConfig = {
LoadCredential = [
"cert.pem:${certsDir}/fullchain.pem"
"pkey.pem:${certsDir}/key.pem"
];
Restart = mkForce "always";
RestartSec = "60"; # Retry every minute
};
};
security.acme.certs.${hostDomain}.postRun = ''
systemctl restart coturn.service
'';
}

1
hosts/sentinel/default.nix
View file

@ -11,7 +11,6 @@
./acme.nix
./blog.nix
./coturn.nix
./fs.nix
./net.nix
./oauth2.nix

15
hosts/ward/default.nix
View file

@ -100,27 +100,12 @@
};
};
};
# deadnix: skip
mkContainer = guestName: {
${guestName} = mkGuest guestName // {
backend = "container";
container.macvlan = "lan";
extraSpecialArgs = {
inherit (inputs.self) nodes globals;
inherit (inputs.self.pkgs.x86_64-linux) lib;
inherit inputs minimal;
};
};
};
in
lib.mkIf (!minimal) (
{ }
// mkMicrovm "adguardhome"
// mkMicrovm "forgejo"
// mkMicrovm "home-gateway"
// mkMicrovm "kanidm"
// mkMicrovm "netbird"
// mkMicrovm "radicale"
// mkMicrovm "vaultwarden"
// mkMicrovm "web-proxy"

34
hosts/ward/guests/home-gateway.nix
View file

@ -1,34 +0,0 @@
{ globals, ... }:
{
# Forwarding required to masquerade netbird network
boot.kernel.sysctl."net.ipv4.ip_forward" = 1;
wireguard.proxy-home.client.via = "ward";
networking.nftables.chains.forward.from-netbird = {
after = [ "conntrack" ];
rules = [
"iifname wt-home oifname lan accept"
];
};
environment.persistence."/persist".directories = [
{
directory = "/var/lib/netbird-home";
mode = "0700";
}
];
services.netbird.clients.home = {
port = 51820;
name = "netbird-home";
interface = "wt-home";
openFirewall = true;
config.ServerSSHAllowed = false;
environment = rec {
NB_MANAGEMENT_URL = "https://${globals.services.netbird.domain}";
NB_ADMIN_URL = NB_MANAGEMENT_URL;
NB_HOSTNAME = "home-gateway";
};
};
}

17
hosts/ward/guests/kanidm.nix
View file

@ -135,17 +135,16 @@ in
];
};
# Netbird
groups."netbird.access" = { };
systems.oauth2.netbird = {
# Firezone
groups."firezone.access" = { };
systems.oauth2.firezone = {
public = true;
displayName = "Netbird";
originUrl = "https://${globals.services.netbird.domain}/";
originLanding = "https://${globals.services.netbird.domain}/";
displayName = "Firezone VPN";
# FIXME: change
originUrl = "https://dummy.example.org/";
originLanding = "https://dummy.example.org/";
preferShortUsername = true;
enableLocalhostRedirects = true;
enableLegacyCrypto = true;
scopeMaps."netbird.access" = [
scopeMaps."firezone.access" = [
"openid"
"email"
"profile"

160
hosts/ward/guests/netbird.nix
View file

@ -1,160 +0,0 @@
{
config,
globals,
lib,
nodes,
...
}:
let
sentinelCfg = nodes.sentinel.config;
netbirdDomain = "netbird.${globals.domains.me}";
in
{
wireguard.proxy-sentinel = {
client.via = "sentinel";
firewallRuleForNode.sentinel.allowedTCPPorts = [
config.services.netbird.server.management.port
config.services.netbird.server.signal.port
];
};
# Mirror the original coturn password
age.secrets.coturn-password-netbird = {
inherit (sentinelCfg.age.secrets.coturn-password-netbird) rekeyFile;
};
age.secrets.coturn-secret = {
generator.script = "alnum";
};
age.secrets.netbird-data-store-encryption-key = {
generator.script =
{ pkgs, ... }:
''
${lib.getExe pkgs.openssl} rand -base64 32
'';
};
environment.persistence."/persist".directories = [
{
directory = "/var/lib/netbird-mgmt";
mode = "640";
user = "netbird";
group = "netbird";
}
];
services.netbird = {
server = {
enable = true;
domain = netbirdDomain;
dashboard.settings.AUTH_AUTHORITY = "https://${globals.services.kanidm.domain}/oauth2/openid/netbird";
management = {
singleAccountModeDomain = "internal.${globals.domains.me}";
dnsDomain = "internal.${globals.domains.me}";
disableAnonymousMetrics = true;
oidcConfigEndpoint = "https://${globals.services.kanidm.domain}/oauth2/openid/netbird/.well-known/openid-configuration";
turnDomain = globals.services.coturn.domain;
turnPort = sentinelCfg.services.coturn.tls-listening-port;
settings = {
HttpConfig = {
# Audience must be set here, otherwise the grpc server will not initialize the jwt validator causing:
# failed validating JWT token sent from peer [...] no jwt validator set
AuthAudience = "netbird";
};
TURNConfig = {
Secret._secret = config.age.secrets.coturn-secret.path;
Turns = [
{
Proto = "udp";
URI = "turn:${config.services.netbird.server.management.turnDomain}:${builtins.toString config.services.netbird.server.management.turnPort}";
Username = "netbird";
Password._secret = config.age.secrets.coturn-password-netbird.path;
}
];
};
DataStoreEncryptionKey._secret = config.age.secrets.netbird-data-store-encryption-key.path;
};
};
};
};
globals.services.netbird.domain = netbirdDomain;
globals.monitoring.http.netbird = {
url = "https://${netbirdDomain}/api/users";
expectedStatus = 401;
expectedBodyRegex = "no valid authentication";
network = "internet";
};
nodes.sentinel = {
services.nginx = {
upstreams.netbird-mgmt = {
servers."${config.wireguard.proxy-sentinel.ipv4}:${builtins.toString config.services.netbird.server.management.port}" =
{ };
extraConfig = ''
zone netbird 64k;
keepalive 5;
'';
monitoring = {
enable = true;
path = "/api/users";
expectedStatus = 401;
expectedBodyRegex = "no valid authentication";
};
};
upstreams.netbird-signal = {
servers."${config.wireguard.proxy-sentinel.ipv4}:${builtins.toString config.services.netbird.server.signal.port}" =
{ };
extraConfig = ''
zone netbird 64k;
keepalive 5;
'';
};
virtualHosts.${netbirdDomain} = {
forceSSL = true;
useACMEWildcardHost = true;
locations = {
"/" = {
root = config.services.netbird.server.dashboard.finalDrv;
tryFiles = "$uri $uri.html $uri/ =404";
X-Frame-Options = "SAMEORIGIN";
};
"/signalexchange.SignalExchange/".extraConfig = ''
grpc_pass grpc://netbird-signal;
grpc_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
grpc_read_timeout 1d;
grpc_send_timeout 1d;
grpc_socket_keepalive on;
'';
"/api".proxyPass = "http://netbird-mgmt";
"/management.ManagementService/".extraConfig = ''
grpc_pass grpc://netbird-mgmt;
grpc_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
grpc_read_timeout 1d;
grpc_send_timeout 1d;
grpc_socket_keepalive on;
'';
};
# client_body_timeout is necessary so that grpc connections do not get closed early, see https://stackoverflow.com/a/67805465
extraConfig = ''
client_header_timeout 1d;
client_body_timeout 1d;
client_max_body_size 512M;
'';
};
};
};
systemd.services.netbird-signal.serviceConfig.RestartSec = "60"; # Retry every minute
systemd.services.netbird-management.serviceConfig.RestartSec = "60"; # Retry every minute
}

1
hosts/ward/secrets/netbird/host.pub
View file

@ -1 +0,0 @@
ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJt2DE0HJjmePYjuZVRcsb0/SfoHSmm06T4ayzIgxUOp

5
modules/default.nix
View file

@ -1,8 +1,4 @@
{
disabledModules = [
"services/networking/netbird.nix"
];
imports = [
./acme-wildcard.nix
./backups.nix
@ -10,7 +6,6 @@
./distributed-config.nix
./globals.nix
./meta.nix
./netbird-client.nix
./nginx-upstream-monitoring.nix
./oauth2-proxy.nix
./promtail.nix

546
modules/netbird-client.nix
View file

@ -1,546 +0,0 @@
{
config,
lib,
pkgs,
...
}:
let
inherit (lib)
attrValues
concatLists
concatStringsSep
escapeShellArgs
filterAttrs
getExe
literalExpression
maintainers
makeBinPath
mapAttrs'
mapAttrsToList
mkDefault
mkIf
mkMerge
mkOption
mkOptionDefault
mkPackageOption
mkRemovedOptionModule
nameValuePair
optional
optionalString
toShellVars
versionAtLeast
versionOlder
;
inherit (lib.types)
attrsOf
bool
enum
package
port
str
submodule
;
inherit (config.boot) kernelPackages;
inherit (config.boot.kernelPackages) kernel;
cfg = config.services.netbird;
toClientList = fn: map fn (attrValues cfg.clients);
toClientAttrs = fn: mapAttrs' (_: fn) cfg.clients;
hardenedClients = filterAttrs (_: client: client.hardened) cfg.clients;
toHardenedClientList = fn: map fn (attrValues hardenedClients);
toHardenedClientAttrs = fn: mapAttrs' (_: fn) hardenedClients;
in
{
meta.maintainers = with maintainers; [
misuzu
thubrecht
nazarewk
];
imports = [
(mkRemovedOptionModule [
"services"
"netbird"
"tunnels"
] "The option `services.netbird.tunnels` has been renamed to `services.netbird.clients`")
];
options.services.netbird = {
enable = mkOption {
type = bool;
default = false;
description = ''
Enables backwards compatible Netbird client service.
This is strictly equivalent to:
```nix
services.netbird.clients.wt0 = {
port = 51820;
name = "netbird";
interface = "wt0";
hardened = false;
};
```
'';
};
package = mkPackageOption pkgs "netbird" { };
ui.enable = mkOption {
type = bool;
default = config.services.displayManager.sessionPackages != [ ];
defaultText = literalExpression ''config.services.displayManager.sessionPackages != [ ]'';
description = ''
Controls presence `netbird-ui` wrappers, defaults to presence of graphical sessions.
'';
};
ui.package = mkPackageOption pkgs "netbird-ui" { };
clients = mkOption {
type = attrsOf (
submodule (
{
name,
config,
...
}:
{
options = {
port = mkOption {
type = port;
example = literalExpression "51820";
description = ''
Port the Netbird client listens on.
'';
};
name = mkOption {
type = str;
default = "netbird-${name}";
description = ''
Primary name for use in:
- systemd service name,
- hardened user name and group,
- [systemd `*Directory=`](https://www.freedesktop.org/software/systemd/man/latest/systemd.exec.html#RuntimeDirectory=) names,
- desktop application identification,
'';
};
interface = mkOption {
type = str;
default = "netbird-${name}";
description = ''
Name of the network interface managed by this client.
'';
};
environment = mkOption {
type = attrsOf str;
defaultText = literalExpression ''
{
NB_CONFIG = "/var/lib/''${config.name}/config.json";
NB_DAEMON_ADDR = "unix:///var/run/''${config.name}/sock";
NB_INTERFACE_NAME = config.interface;
NB_LOG_FILE = mkOptionDefault "console";
NB_LOG_LEVEL = config.logLevel;
NB_SERVICE = config.name;
NB_WIREGUARD_PORT = toString config.port;
}
'';
description = ''
Environment for the netbird service, used to pass configuration options.
'';
};
autoStart = mkOption {
type = bool;
default = true;
description = ''
Start the service with the system.
As of 2024-02-13 it is not possible to start a Netbird client daemon without immediately
connecting to the network, but it is [planned for a near future](https://github.com/netbirdio/netbird/projects/2#card-91718018).
'';
};
openFirewall = mkOption {
type = bool;
default = true;
description = ''
Opens up firewall `port` for communication between Netbird peers directly over LAN or public IP,
without using (internet-hosted) TURN servers as intermediaries.
'';
};
hardened = mkOption {
type = bool;
default = true;
description = ''
Hardened service:
- runs as a dedicated user with minimal set of permissions (see caveats),
- restricts daemon configuration socket access to dedicated user group
(you can grant access to it with `users.users."<user>".extraGroups = [ "netbird-${name}" ]`),
Even though the local system resources access is restricted:
- `CAP_NET_RAW`, `CAP_NET_ADMIN` and `CAP_BPF` still give unlimited network manipulation possibilites,
- older kernels don't have `CAP_BPF` and use `CAP_SYS_ADMIN` instead,
Known security features that are not (yet) integrated into the module:
- 2024-02-14: `rosenpass` is an experimental feature configurable solely
through `--enable-rosenpass` flag on the `netbird up` command,
see [the docs](https://docs.netbird.io/how-to/enable-post-quantum-cryptography)
'';
};
logLevel = mkOption {
type = enum [
# logrus loglevels
"panic"
"fatal"
"error"
"warn"
"warning"
"info"
"debug"
"trace"
];
default = "info";
description = "Log level of the Netbird daemon.";
};
wrapper = mkOption {
type = package;
internal = true;
default =
let
makeWrapperArgs = concatLists (
mapAttrsToList (key: value: [
"--set-default"
key
value
]) config.environment
);
in
pkgs.stdenv.mkDerivation {
name = "${cfg.package.name}-wrapper-${name}";
meta.mainProgram = "netbird-${name}";
nativeBuildInputs = with pkgs; [ makeWrapper ];
phases = [ "installPhase" ];
installPhase = concatStringsSep "\n" [
''
mkdir -p "$out/bin"
makeWrapper ${lib.getExe cfg.package} "$out/bin/netbird-${name}" \
${escapeShellArgs makeWrapperArgs}
''
(optionalString cfg.ui.enable ''
# netbird-ui doesn't support envvars
makeWrapper ${lib.getExe cfg.ui.package}-ui "$out/bin/netbird-ui-${name}" \
--add-flags '--daemon-addr=${config.environment.NB_DAEMON_ADDR}'
mkdir -p "$out/share/applications"
substitute ${cfg.ui.package}/share/applications/netbird.desktop \
"$out/share/applications/netbird-${name}.desktop" \
--replace-fail 'Name=Netbird' "Name=Netbird @ ${config.name}" \
--replace-fail '${lib.getExe cfg.ui.package}-ui' "$out/bin/netbird-ui-${name}"
'')
];
};
};
# see https://github.com/netbirdio/netbird/blob/88747e3e0191abc64f1e8c7ecc65e5e50a1527fd/client/internal/config.go#L49-L82
config = mkOption {
inherit (pkgs.formats.json { }) type;
defaultText = literalExpression ''
{
DisableAutoConnect = !config.autoStart;
WgIface = config.interface;
WgPort = config.port;
}
'';
description = ''
Additional configuration that exists before the first start and
later overrides the existing values in `config.json`.
It is mostly helpful to manage configuration ignored/not yet implemented
outside of `netbird up` invocation.
WARNING: this is not an upstream feature, it could break in the future
(by having lower priority) after upstream implements an equivalent.
It is implemented as a `preStart` script which overrides `config.json`
with content of `/etc/netbird-${name}/config.d/*.json` files.
This option manages specifically `50-nixos.json` file.
Consult [the source code](https://github.com/netbirdio/netbird/blob/88747e3e0191abc64f1e8c7ecc65e5e50a1527fd/client/internal/config.go#L49-L82)
or inspect existing file for a complete list of available configurations.
'';
};
};
config.environment = {
NB_CONFIG = "/var/lib/${config.name}/config.json";
NB_DAEMON_ADDR = "unix:///var/run/${config.name}/sock";
NB_INTERFACE_NAME = config.interface;
NB_LOG_FILE = mkOptionDefault "console";
NB_LOG_LEVEL = config.logLevel;
NB_SERVICE = config.name;
NB_WIREGUARD_PORT = toString config.port;
};
config.config = {
DisableAutoConnect = !config.autoStart;
WgIface = config.interface;
WgPort = config.port;
};
}
)
);
default = { };
description = ''
Attribute set of Netbird client daemons, by default each one will:
1. be manageable using dedicated tooling:
- `netbird-<name>` script,
- `Netbird - netbird-<name>` graphical interface when appropriate (see `ui.enable`),
2. run as a `netbird-<name>.service`,
3. listen for incoming remote connections on the port `51830` (`openFirewall` by default),
4. manage the `netbird-<name>` wireguard interface,
5. use the `/var/lib/netbird-<name>/config.json` configuration file,
6. override `/var/lib/netbird-<name>/config.json` with values from `/etc/netbird-<name>/config.d/*.json`,
7. (`hardened`) be locally manageable by `netbird-<name>` system group,
With following caveats:
- multiple daemons will interfere with each other's DNS resolution of `netbird.cloud`, but
should remain fully operational otherwise.
Setting up custom (non-conflicting) DNS zone is currently possible only when self-hosting.
'';
example = lib.literalExpression ''
{
services.netbird.clients.wt0.port = 51820;
services.netbird.clients.personal.port = 51821;
services.netbird.clients.work1.port = 51822;
}
'';
};
};
config = mkMerge [
(mkIf cfg.enable (
let
name = "wt0";
client = cfg.clients."${name}";
in
{
services.netbird.clients."${name}" = {
port = mkDefault 51820;
name = mkDefault "netbird";
interface = mkDefault "wt0";
hardened = mkDefault false;
};
environment.systemPackages = [
(lib.hiPrio (
pkgs.runCommand "${name}-as-default" { } ''
mkdir -p "$out/bin"
for binary in netbird ${optionalString cfg.ui.enable "netbird-ui"} ; do
ln -s "${client.wrapper}/bin/$binary-${name}" "$out/bin/$binary"
done
''
))
];
}
))
{
boot.extraModulePackages = optional (
cfg.clients != { } && (versionOlder kernel.version "5.6")
) kernelPackages.wireguard;
environment.systemPackages = toClientList (client: client.wrapper)
# omitted due to https://github.com/netbirdio/netbird/issues/1562
#++ optional (cfg.clients != { }) cfg.package
# omitted due to https://github.com/netbirdio/netbird/issues/1581
#++ optional (cfg.clients != { } && cfg.ui.enable) cfg.ui.package
;
networking.dhcpcd.denyInterfaces = toClientList (client: client.interface);
networking.networkmanager.unmanaged = toClientList (client: "interface-name:${client.interface}");
networking.firewall.allowedUDPPorts = concatLists (
toClientList (client: optional client.openFirewall client.port)
);
systemd.network.networks = mkIf config.networking.useNetworkd (
toClientAttrs (
client:
nameValuePair "50-netbird-${client.interface}" {
matchConfig = {
Name = client.interface;
};
linkConfig = {
Unmanaged = true;
ActivationPolicy = "manual";
};
}
)
);
environment.etc = toClientAttrs (
client:
nameValuePair "${client.name}/config.d/50-nixos.json" {
text = builtins.toJSON client.config;
mode = "0444";
}
);
systemd.services = toClientAttrs (
client:
nameValuePair client.name {
description = "A WireGuard-based mesh network that connects your devices into a single private network";
documentation = [ "https://netbird.io/docs/" ];
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
path = optional (!config.services.resolved.enable) pkgs.openresolv;
serviceConfig = {
ExecStart = "${getExe client.wrapper} service run";
Restart = "always";
RuntimeDirectory = client.name;
RuntimeDirectoryMode = mkDefault "0755";
ConfigurationDirectory = client.name;
StateDirectory = client.name;
StateDirectoryMode = "0700";
WorkingDirectory = "/var/lib/${client.name}";
};
unitConfig = {
StartLimitInterval = 5;
StartLimitBurst = 10;
};
stopIfChanged = false;
}
);
}
# Hardening section
(mkIf (hardenedClients != { }) {
users.groups = toHardenedClientAttrs (client: nameValuePair client.name { });
users.users = toHardenedClientAttrs (
client:
nameValuePair client.name {
isSystemUser = true;
home = "/var/lib/${client.name}";
group = client.name;
}
);
systemd.services = toHardenedClientAttrs (
client:
nameValuePair client.name (
mkIf client.hardened {
serviceConfig = {
RuntimeDirectoryMode = "0750";
User = client.name;
Group = client.name;
# settings implied by DynamicUser=true, without actully using it,
# see https://www.freedesktop.org/software/systemd/man/latest/systemd.exec.html#DynamicUser=
RemoveIPC = true;
PrivateTmp = true;
ProtectSystem = "strict";
ProtectHome = "yes";
AmbientCapabilities =
[
# see https://man7.org/linux/man-pages/man7/capabilities.7.html
# see https://docs.netbird.io/how-to/installation#running-net-bird-in-docker
#
# seems to work fine without CAP_SYS_ADMIN and CAP_SYS_RESOURCE
# CAP_NET_BIND_SERVICE could be added to allow binding on low ports, but is not required,
# see https://github.com/netbirdio/netbird/pull/1513
# failed creating tunnel interface wt-priv: [operation not permitted
"CAP_NET_ADMIN"
# failed to pull up wgInterface [wt-priv]: failed to create ipv4 raw socket: socket: operation not permitted
"CAP_NET_RAW"
]
# required for eBPF filter, used to be subset of CAP_SYS_ADMIN
++ optional (versionAtLeast kernel.version "5.8") "CAP_BPF"
++ optional (versionOlder kernel.version "5.8") "CAP_SYS_ADMIN";
};
}
)
);
# see https://github.com/systemd/systemd/blob/17f3e91e8107b2b29fe25755651b230bbc81a514/src/resolve/org.freedesktop.resolve1.policy#L43-L43
security.polkit.extraConfig = mkIf config.services.resolved.enable ''
// systemd-resolved access for Netbird clients
polkit.addRule(function(action, subject) {
var actions = [
"org.freedesktop.resolve1.set-dns-servers",
"org.freedesktop.resolve1.set-domains",
];
var users = ${builtins.toJSON (toHardenedClientList (client: client.name))};
if (actions.indexOf(action.id) >= 0 && users.indexOf(subject.user) >= 0 ) {
return polkit.Result.YES;
}
});
'';
})
# migration & temporary fixups section
{
systemd.services = toClientAttrs (
client:
nameValuePair client.name {
preStart = ''
set -eEuo pipefail
${optionalString (client.logLevel == "trace" || client.logLevel == "debug") "set -x"}
PATH="${
makeBinPath (
with pkgs;
[
coreutils
jq
diffutils
]
)
}:$PATH"
export ${toShellVars client.environment}
# merge /etc/${client.name}/config.d' into "$NB_CONFIG"
{
test -e "$NB_CONFIG" || echo -n '{}' > "$NB_CONFIG"
# merge config.d with "$NB_CONFIG" into "$NB_CONFIG.new"
jq -sS 'reduce .[] as $i ({}; . * $i)' \
"$NB_CONFIG" \
/etc/${client.name}/config.d/*.json \
> "$NB_CONFIG.new"
echo "Comparing $NB_CONFIG with $NB_CONFIG.new ..."
if ! diff <(jq -S <"$NB_CONFIG") "$NB_CONFIG.new" ; then
echo "Updating $NB_CONFIG ..."
mv "$NB_CONFIG.new" "$NB_CONFIG"
else
echo "Files are the same, not doing anything."
rm "$NB_CONFIG.new"
fi
}
'';
}
);
}
];
}

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